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astraxan [27]
3 years ago
8

Sorry the last one was actually math

Mathematics
1 answer:
vekshin13 years ago
7 0
It's alright I don't mind at all
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crimeas [40]
It’s C. hope this helped and good luck !!
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ExtremeBDS [4]

Answer:

x =  \frac{1}{2}

Step-by-step explanation:

2 + 4x - 4 = 0 \\ 2 + 4x = 0 + 4 \\ 2 + 4x = 4 \\ 4x = 4 - 2 \\ 4x = 2 \\  \frac{4x}{4}  =  \frac{2}{4}  \\ x =  \frac{1}{2}

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Can someone help me please ? Thanks!
notka56 [123]
Use pythagorean theorem for all of them
a. 3, 4, 5
3^2+4^2?5^2
9+16?25
25=25
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25+36=49
61>49
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c. 64+81=144
145>144
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sergij07 [2.7K]

Answer:

str + stu = 180 \\ 180 - 20 = 4x \\ 160 = 4x \\ x = 40

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